@dave r said:

The results are to be expected when you divide up a face into smaller faces. It really is exactly the same thing happening as when you have a 3D shape, draw a smaller face and push that in. You can skin those recesses by tracing a line segment along the edge of the recess. It would be better to start with just the outline of the gun and extrude that. Then add the lines for the various smaller faces and use Push/Pull on those. Since the gun is mostly symmetrical, model one half of it. then copy the half with Move/Copy and flip the copy to make the opposite half.

I will try this. Thanks πŸ˜„